571 lines
25 KiB
Java
571 lines
25 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.jasper.compiler;
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import java.io.BufferedOutputStream;
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import java.io.BufferedReader;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.Reader;
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import java.lang.reflect.Field;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Locale;
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import java.util.Map;
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import java.util.StringTokenizer;
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import org.apache.jasper.JasperException;
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import org.apache.juli.logging.Log;
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import org.apache.juli.logging.LogFactory;
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import org.eclipse.jdt.core.compiler.IProblem;
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import org.eclipse.jdt.internal.compiler.ClassFile;
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import org.eclipse.jdt.internal.compiler.CompilationResult;
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import org.eclipse.jdt.internal.compiler.Compiler;
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import org.eclipse.jdt.internal.compiler.DefaultErrorHandlingPolicies;
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import org.eclipse.jdt.internal.compiler.ICompilerRequestor;
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import org.eclipse.jdt.internal.compiler.IErrorHandlingPolicy;
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import org.eclipse.jdt.internal.compiler.IProblemFactory;
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import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
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import org.eclipse.jdt.internal.compiler.env.ICompilationUnit;
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import org.eclipse.jdt.internal.compiler.env.INameEnvironment;
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import org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer;
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import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
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import org.eclipse.jdt.internal.compiler.problem.DefaultProblemFactory;
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/**
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* JDT class compiler. This compiler will load source dependencies from the
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* context classloader, reducing dramatically disk access during
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* the compilation process.
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*
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* Based on code from Cocoon2.
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*
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* @author Remy Maucherat
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*/
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public class JDTCompiler extends org.apache.jasper.compiler.Compiler {
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private static final String JDT_JAVA_9_VERSION;
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static {
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// The constant for Java 9 changed between 4.6 and 4.7 in a way that is
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// not backwards compatible. Need to figure out which version is in use
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// so the correct constant value is used.
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String jdtJava9Version = null;
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Class<?> clazz = CompilerOptions.class;
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for (Field field : clazz.getFields()) {
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if ("VERSION_9".equals(field.getName())) {
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// 4.7 onwards: CompilerOptions.VERSION_9
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jdtJava9Version = "9";
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break;
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}
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}
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if (jdtJava9Version == null) {
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// 4.6 and earlier: CompilerOptions.VERSION_1_9
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jdtJava9Version = "1.9";
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}
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JDT_JAVA_9_VERSION = jdtJava9Version;
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}
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private final Log log = LogFactory.getLog(JDTCompiler.class); // must not be static
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/**
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* Compile the servlet from .java file to .class file
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*/
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@Override
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protected void generateClass(String[] smap)
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throws FileNotFoundException, JasperException, Exception {
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long t1 = 0;
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if (log.isDebugEnabled()) {
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t1 = System.currentTimeMillis();
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}
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final String sourceFile = ctxt.getServletJavaFileName();
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final String outputDir = ctxt.getOptions().getScratchDir().getAbsolutePath();
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String packageName = ctxt.getServletPackageName();
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final String targetClassName =
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((packageName.length() != 0) ? (packageName + ".") : "")
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+ ctxt.getServletClassName();
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final ClassLoader classLoader = ctxt.getJspLoader();
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String[] fileNames = new String[] {sourceFile};
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String[] classNames = new String[] {targetClassName};
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final ArrayList<JavacErrorDetail> problemList = new ArrayList<>();
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class CompilationUnit implements ICompilationUnit {
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private final String className;
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private final String sourceFile;
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CompilationUnit(String sourceFile, String className) {
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this.className = className;
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this.sourceFile = sourceFile;
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}
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@Override
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public char[] getFileName() {
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return sourceFile.toCharArray();
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}
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@Override
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public char[] getContents() {
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char[] result = null;
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try (FileInputStream is = new FileInputStream(sourceFile);
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InputStreamReader isr = new InputStreamReader(
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is, ctxt.getOptions().getJavaEncoding());
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Reader reader = new BufferedReader(isr)) {
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char[] chars = new char[8192];
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StringBuilder buf = new StringBuilder();
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int count;
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while ((count = reader.read(chars, 0,
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chars.length)) > 0) {
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buf.append(chars, 0, count);
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}
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result = new char[buf.length()];
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buf.getChars(0, result.length, result, 0);
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} catch (IOException e) {
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log.error("Compilation error", e);
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}
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return result;
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}
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@Override
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public char[] getMainTypeName() {
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int dot = className.lastIndexOf('.');
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if (dot > 0) {
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return className.substring(dot + 1).toCharArray();
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}
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return className.toCharArray();
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}
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@Override
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public char[][] getPackageName() {
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StringTokenizer izer =
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new StringTokenizer(className, ".");
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char[][] result = new char[izer.countTokens()-1][];
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for (int i = 0; i < result.length; i++) {
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String tok = izer.nextToken();
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result[i] = tok.toCharArray();
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}
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return result;
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}
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@Override
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public boolean ignoreOptionalProblems() {
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return false;
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}
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}
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final INameEnvironment env = new INameEnvironment() {
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@Override
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public NameEnvironmentAnswer
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findType(char[][] compoundTypeName) {
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StringBuilder result = new StringBuilder();
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for (int i = 0; i < compoundTypeName.length; i++) {
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if(i > 0)
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result.append('.');
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result.append(compoundTypeName[i]);
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}
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return findType(result.toString());
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}
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@Override
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public NameEnvironmentAnswer
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findType(char[] typeName,
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char[][] packageName) {
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StringBuilder result = new StringBuilder();
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int i=0;
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for (; i < packageName.length; i++) {
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if(i > 0)
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result.append('.');
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result.append(packageName[i]);
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}
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if(i > 0)
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result.append('.');
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result.append(typeName);
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return findType(result.toString());
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}
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private NameEnvironmentAnswer findType(String className) {
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if (className.equals(targetClassName)) {
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ICompilationUnit compilationUnit =
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new CompilationUnit(sourceFile, className);
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return
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new NameEnvironmentAnswer(compilationUnit, null);
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}
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String resourceName =
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className.replace('.', '/') + ".class";
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try (InputStream is = classLoader.getResourceAsStream(resourceName)) {
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if (is != null) {
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byte[] classBytes;
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byte[] buf = new byte[8192];
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ByteArrayOutputStream baos =
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new ByteArrayOutputStream(buf.length);
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int count;
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while ((count = is.read(buf, 0, buf.length)) > 0) {
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baos.write(buf, 0, count);
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}
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baos.flush();
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classBytes = baos.toByteArray();
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char[] fileName = className.toCharArray();
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ClassFileReader classFileReader =
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new ClassFileReader(classBytes, fileName,
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true);
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return
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new NameEnvironmentAnswer(classFileReader, null);
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}
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} catch (IOException exc) {
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log.error("Compilation error", exc);
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} catch (org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException exc) {
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log.error("Compilation error", exc);
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}
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return null;
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}
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private boolean isPackage(String result) {
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if (result.equals(targetClassName)) {
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return false;
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}
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String resourceName = result.replace('.', '/') + ".class";
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try (InputStream is =
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classLoader.getResourceAsStream(resourceName)) {
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return is == null;
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} catch (IOException e) {
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// we are here, since close on is failed. That means it was not null
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return false;
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}
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}
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@Override
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public boolean isPackage(char[][] parentPackageName,
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char[] packageName) {
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StringBuilder result = new StringBuilder();
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int i=0;
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if (parentPackageName != null) {
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for (; i < parentPackageName.length; i++) {
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if(i > 0)
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result.append('.');
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result.append(parentPackageName[i]);
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}
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}
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if (Character.isUpperCase(packageName[0])) {
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if (!isPackage(result.toString())) {
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return false;
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}
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}
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if(i > 0)
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result.append('.');
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result.append(packageName);
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return isPackage(result.toString());
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}
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@Override
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public void cleanup() {
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}
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};
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final IErrorHandlingPolicy policy =
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DefaultErrorHandlingPolicies.proceedWithAllProblems();
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final Map<String,String> settings = new HashMap<>();
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settings.put(CompilerOptions.OPTION_LineNumberAttribute,
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CompilerOptions.GENERATE);
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settings.put(CompilerOptions.OPTION_SourceFileAttribute,
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CompilerOptions.GENERATE);
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settings.put(CompilerOptions.OPTION_ReportDeprecation,
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CompilerOptions.IGNORE);
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if (ctxt.getOptions().getJavaEncoding() != null) {
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settings.put(CompilerOptions.OPTION_Encoding,
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ctxt.getOptions().getJavaEncoding());
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}
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if (ctxt.getOptions().getClassDebugInfo()) {
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settings.put(CompilerOptions.OPTION_LocalVariableAttribute,
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CompilerOptions.GENERATE);
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}
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// Source JVM
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if(ctxt.getOptions().getCompilerSourceVM() != null) {
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String opt = ctxt.getOptions().getCompilerSourceVM();
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if(opt.equals("1.1")) {
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settings.put(CompilerOptions.OPTION_Source,
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CompilerOptions.VERSION_1_1);
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} else if(opt.equals("1.2")) {
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settings.put(CompilerOptions.OPTION_Source,
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CompilerOptions.VERSION_1_2);
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} else if(opt.equals("1.3")) {
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settings.put(CompilerOptions.OPTION_Source,
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CompilerOptions.VERSION_1_3);
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} else if(opt.equals("1.4")) {
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settings.put(CompilerOptions.OPTION_Source,
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CompilerOptions.VERSION_1_4);
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} else if(opt.equals("1.5")) {
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settings.put(CompilerOptions.OPTION_Source,
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CompilerOptions.VERSION_1_5);
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} else if(opt.equals("1.6")) {
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settings.put(CompilerOptions.OPTION_Source,
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CompilerOptions.VERSION_1_6);
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} else if(opt.equals("1.7")) {
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settings.put(CompilerOptions.OPTION_Source,
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CompilerOptions.VERSION_1_7);
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} else if(opt.equals("1.8")) {
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settings.put(CompilerOptions.OPTION_Source,
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CompilerOptions.VERSION_1_8);
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// Support old format that was used in EA implementation as well
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} else if(opt.equals("9") || opt.equals("1.9")) {
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settings.put(CompilerOptions.OPTION_Source,
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JDT_JAVA_9_VERSION);
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} else if(opt.equals("10")) {
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// Constant not available in latest ECJ version that runs on
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// Java 7.
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// This is checked against the actual version below.
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settings.put(CompilerOptions.OPTION_Source, "10");
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} else if(opt.equals("11")) {
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// Constant not available in latest ECJ version that runs on
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// Java 7.
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// This is checked against the actual version below.
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settings.put(CompilerOptions.OPTION_Source, "11");
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} else if(opt.equals("12")) {
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// Constant not available in latest available ECJ version.
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// May be supported in a snapshot build.
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// This is checked against the actual version below.
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settings.put(CompilerOptions.OPTION_Source, "12");
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} else if(opt.equals("13")) {
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// Constant not available in latest available ECJ version.
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// May be supported in a snapshot build.
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// This is checked against the actual version below.
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settings.put(CompilerOptions.OPTION_Source, "13");
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} else {
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log.warn(Localizer.getMessage("jsp.warning.unknown.sourceVM", opt));
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settings.put(CompilerOptions.OPTION_Source,
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CompilerOptions.VERSION_1_7);
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}
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} else {
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// Default to 1.7
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settings.put(CompilerOptions.OPTION_Source,
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CompilerOptions.VERSION_1_7);
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}
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// Target JVM
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if(ctxt.getOptions().getCompilerTargetVM() != null) {
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String opt = ctxt.getOptions().getCompilerTargetVM();
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if(opt.equals("1.1")) {
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settings.put(CompilerOptions.OPTION_TargetPlatform,
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CompilerOptions.VERSION_1_1);
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} else if(opt.equals("1.2")) {
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settings.put(CompilerOptions.OPTION_TargetPlatform,
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CompilerOptions.VERSION_1_2);
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} else if(opt.equals("1.3")) {
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settings.put(CompilerOptions.OPTION_TargetPlatform,
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CompilerOptions.VERSION_1_3);
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} else if(opt.equals("1.4")) {
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settings.put(CompilerOptions.OPTION_TargetPlatform,
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CompilerOptions.VERSION_1_4);
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} else if(opt.equals("1.5")) {
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settings.put(CompilerOptions.OPTION_TargetPlatform,
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CompilerOptions.VERSION_1_5);
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settings.put(CompilerOptions.OPTION_Compliance,
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CompilerOptions.VERSION_1_5);
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} else if(opt.equals("1.6")) {
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settings.put(CompilerOptions.OPTION_TargetPlatform,
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CompilerOptions.VERSION_1_6);
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settings.put(CompilerOptions.OPTION_Compliance,
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CompilerOptions.VERSION_1_6);
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} else if(opt.equals("1.7")) {
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settings.put(CompilerOptions.OPTION_TargetPlatform,
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CompilerOptions.VERSION_1_7);
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settings.put(CompilerOptions.OPTION_Compliance,
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CompilerOptions.VERSION_1_7);
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} else if(opt.equals("1.8")) {
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settings.put(CompilerOptions.OPTION_TargetPlatform,
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CompilerOptions.VERSION_1_8);
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settings.put(CompilerOptions.OPTION_Compliance,
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CompilerOptions.VERSION_1_8);
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} else if(opt.equals("9") || opt.equals("1.9")) {
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settings.put(CompilerOptions.OPTION_TargetPlatform,
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JDT_JAVA_9_VERSION);
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settings.put(CompilerOptions.OPTION_Compliance,
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JDT_JAVA_9_VERSION);
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} else if(opt.equals("10")) {
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// Constant not available in latest ECJ version that runs on
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// Java 7.
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// This is checked against the actual version below.
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settings.put(CompilerOptions.OPTION_TargetPlatform, "10");
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settings.put(CompilerOptions.OPTION_Compliance, "10");
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} else if(opt.equals("11")) {
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// Constant not available in latest ECJ version that runs on
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// Java 7.
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// This is checked against the actual version below.
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settings.put(CompilerOptions.OPTION_TargetPlatform, "11");
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settings.put(CompilerOptions.OPTION_Compliance, "11");
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} else if(opt.equals("12")) {
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// Constant not available in latest available ECJ version.
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// May be supported in a snapshot build.
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// This is checked against the actual version below.
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settings.put(CompilerOptions.OPTION_TargetPlatform, "12");
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settings.put(CompilerOptions.OPTION_Compliance, "12");
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} else if(opt.equals("13")) {
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// Constant not available in latest available ECJ version.
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// May be supported in a snapshot build.
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// This is checked against the actual version below.
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settings.put(CompilerOptions.OPTION_TargetPlatform, "13");
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settings.put(CompilerOptions.OPTION_Compliance, "13");
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} else {
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log.warn(Localizer.getMessage("jsp.warning.unknown.targetVM", opt));
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settings.put(CompilerOptions.OPTION_TargetPlatform,
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CompilerOptions.VERSION_1_7);
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}
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} else {
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// Default to 1.7
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settings.put(CompilerOptions.OPTION_TargetPlatform,
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CompilerOptions.VERSION_1_7);
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settings.put(CompilerOptions.OPTION_Compliance,
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CompilerOptions.VERSION_1_7);
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}
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final IProblemFactory problemFactory =
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new DefaultProblemFactory(Locale.getDefault());
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final ICompilerRequestor requestor = new ICompilerRequestor() {
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@Override
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public void acceptResult(CompilationResult result) {
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try {
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if (result.hasProblems()) {
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IProblem[] problems = result.getProblems();
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for (int i = 0; i < problems.length; i++) {
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IProblem problem = problems[i];
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if (problem.isError()) {
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String name =
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new String(problems[i].getOriginatingFileName());
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try {
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problemList.add(ErrorDispatcher.createJavacError
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(name, pageNodes, new StringBuilder(problem.getMessage()),
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problem.getSourceLineNumber(), ctxt));
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} catch (JasperException e) {
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log.error("Error visiting node", e);
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}
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}
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}
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}
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if (problemList.isEmpty()) {
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ClassFile[] classFiles = result.getClassFiles();
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for (int i = 0; i < classFiles.length; i++) {
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ClassFile classFile = classFiles[i];
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char[][] compoundName =
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classFile.getCompoundName();
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StringBuilder classFileName = new StringBuilder(outputDir).append('/');
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for (int j = 0;
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j < compoundName.length; j++) {
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if(j > 0)
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classFileName.append('/');
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classFileName.append(compoundName[j]);
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}
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byte[] bytes = classFile.getBytes();
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classFileName.append(".class");
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try (FileOutputStream fout = new FileOutputStream(
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classFileName.toString());
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BufferedOutputStream bos = new BufferedOutputStream(fout);) {
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bos.write(bytes);
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}
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}
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}
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} catch (IOException exc) {
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log.error("Compilation error", exc);
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}
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}
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};
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ICompilationUnit[] compilationUnits =
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new ICompilationUnit[classNames.length];
|
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for (int i = 0; i < compilationUnits.length; i++) {
|
|
String className = classNames[i];
|
|
compilationUnits[i] = new CompilationUnit(fileNames[i], className);
|
|
}
|
|
CompilerOptions cOptions = new CompilerOptions(settings);
|
|
|
|
// Check source/target JDK versions as the newest versions are allowed
|
|
// in Tomcat configuration but may not be supported by the ECJ version
|
|
// being used.
|
|
String requestedSource = ctxt.getOptions().getCompilerSourceVM();
|
|
if (requestedSource != null) {
|
|
String actualSource = CompilerOptions.versionFromJdkLevel(cOptions.sourceLevel);
|
|
if (!requestedSource.equals(actualSource)) {
|
|
log.warn(Localizer.getMessage("jsp.warning.unsupported.sourceVM", requestedSource, actualSource));
|
|
}
|
|
}
|
|
String requestedTarget = ctxt.getOptions().getCompilerTargetVM();
|
|
if (requestedTarget != null) {
|
|
String actualTarget = CompilerOptions.versionFromJdkLevel(cOptions.targetJDK);
|
|
if (!requestedTarget.equals(actualTarget)) {
|
|
log.warn(Localizer.getMessage("jsp.warning.unsupported.targetVM", requestedTarget, actualTarget));
|
|
}
|
|
}
|
|
|
|
cOptions.parseLiteralExpressionsAsConstants = true;
|
|
Compiler compiler = new Compiler(env,
|
|
policy,
|
|
cOptions,
|
|
requestor,
|
|
problemFactory);
|
|
compiler.compile(compilationUnits);
|
|
|
|
if (!ctxt.keepGenerated()) {
|
|
File javaFile = new File(ctxt.getServletJavaFileName());
|
|
if (!javaFile.delete()) {
|
|
throw new JasperException(Localizer.getMessage(
|
|
"jsp.warning.compiler.javafile.delete.fail", javaFile));
|
|
}
|
|
}
|
|
|
|
if (!problemList.isEmpty()) {
|
|
JavacErrorDetail[] jeds =
|
|
problemList.toArray(new JavacErrorDetail[0]);
|
|
errDispatcher.javacError(jeds);
|
|
}
|
|
|
|
if( log.isDebugEnabled() ) {
|
|
long t2=System.currentTimeMillis();
|
|
log.debug("Compiled " + ctxt.getServletJavaFileName() + " "
|
|
+ (t2-t1) + "ms");
|
|
}
|
|
|
|
if (ctxt.isPrototypeMode()) {
|
|
return;
|
|
}
|
|
|
|
// JSR45 Support
|
|
if (! options.isSmapSuppressed()) {
|
|
SmapUtil.installSmap(smap);
|
|
}
|
|
}
|
|
}
|